Cysts of the colonial dinoflagellate polykrikos schwartzii Bütschli 1873, (gymnodiniales), from recent sediments, firth of forth, Scotland
- 1 December 1981
- journal article
- research article
- Published by Taylor & Francis in Palynology
- Vol. 5 (1), 65-79
- https://doi.org/10.1080/01916122.1981.9989218
Abstract
Cysts of the colonial gymnodinialean dinoflagellate Polykrikos schwartzii Bütschli 1873, recovered from Recent sediments in the Firth of Forth, Scotland, are shown to be extremely variable in morphology, especially in regard to their wall structure and reticulate ornamentation. The cysts are, however, based upon a relatively simple plan with each elongate cyst carrying seven whorls of ornament. No clear or simple dinoflagellate paratabulation is discernible but an apical archeopyle is described together with possible details around the archeopyle margin. These cysts may provide information about the nature of “primitive”; tabulations because of their similarity with some fossil dinoflagellate cysts. The distribution of Polykrikos cysts in Recent sediments is described from both the Firth of Forth, the North Atlantic, and around the British Isles. The known autecology suggests the possible usefulness of P. schwartzii cysts in the interpretation of environments, particularly climate, within the Quaternary record.Keywords
This publication has 5 references indexed in Scilit:
- DINOFLAGELLATE CYSTS IN THE PLANKTONNew Phytologist, 1978
- Cyst formation, sedimentation, and preservation: Factors affecting dinoflagellate assemblages in recent sediments from trondheimsfjord, NorwayReview of Palaeobotany and Palynology, 1976
- A survey of thecal fine structure in the DinophyceaeBotanical Journal of the Linnean Society, 1970
- Modern Dinoflagellate Cysts and Evolution of the PeridinialesMicropaleontology, 1968
- A Modified Filtration System for Palynological PreparationsNature, 1963